Dr. Debdatta Ratna Dr. Debdatta Ratna has been working as a scientist at the Naval Materials Research Laboratory (Defence Research and Development Organization-DRDO), Ambernath, Maharashtra, India, for the last　28　years　and presently heads the polymer science and technology department. He obtained his MSc in chemistry, MTech in materials science & engineering and a Doctorate in polymer science from the Indian Institute of Technology, Kharagpur. He was a visiting scientist to Monash University, Australia, on BOYSCAST Fellowship in 2000, sponsored by DST, India. He was also a visiting scientist to Technical University, Kaiserslautern, Germany, on a prestigious Alexander von Humboldt Fellowship from 2006 to 2008. He has also visited a number of foreign universities and institutions in the United States, Australia, and Germany, to deliver lectures. Dr. Ratna has carried out extensive work on toughened epoxy composites, nanocomposites, interpenetrating polymer networks, shape memory polymers, shape-healing polymers and composites etc. He has published more than 100 technical papers in reputed international journals and　authored four books. He has served as a reviewer for several international journals and research grant councils of Hong Kong, Czech Republic, and United States. He has received laboratory level and national awards for product development and technology innovation. His name has figured in top 2% of Indian scientists in the global list compiled by Stanford University, USA. 　 B.C. Chakraborty Dr. Chakraborty graduated in Chemical Engineering from Jadavpur University (India) and attained a Ph.D. in Chemical engineering from IIT Bombay (India). He served on the Defence Research and Development Organisation in Mumbai and Ambernath (India) till 2016 and retired as an "Outstanding scientist". He thereafter served as Director, Polymer Nano Technology Centre in BSA Crescent Institute of Science & Technology (Chennai, India) for one year. Dr Chakraborty has vast research experience in dynamic viscoelasticity, acoustic polymers, blends, IPNs, composites and nano composites. He has carried out extensive work on vibration damping materials and developed a number of products. He has received several prestigious awards from the Defence Research and Development Organization (DRDO), and is a member of various committees for several DRDO laboratories. He has published approximately 60 papers in international journals and has 10 patents to his credit.